The CardioChek PA analyzer achieves accuracy similar to that of a clinical laboratory, but only requires a small (40 μL) blood sample from a fingerstick - Sold separately. The CardioChek® family of products include PTS Panels® test strips and a MEMo® Chip which allow flexibility in testing with the CardioChek PA and CardioChek Plus analyzers. PTS Panels test strips are composed of several layers of filters and dry chemistry membranes in a plastic carrier. Each membrane layer performs specific functions to process and facilitate chemical reactions. The dry chemistry membranes are stable at room temperature.